US20080257558A1 - Shifting apparatus and method - Google Patents
Shifting apparatus and method Download PDFInfo
- Publication number
- US20080257558A1 US20080257558A1 US11/788,818 US78881807A US2008257558A1 US 20080257558 A1 US20080257558 A1 US 20080257558A1 US 78881807 A US78881807 A US 78881807A US 2008257558 A1 US2008257558 A1 US 2008257558A1
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- United States
- Prior art keywords
- power piston
- outer housing
- well
- sliding sleeve
- collet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000000034 method Methods 0.000 title claims description 23
- 239000004215 Carbon black (E152) Substances 0.000 claims abstract description 11
- 229930195733 hydrocarbon Natural products 0.000 claims abstract description 11
- 150000002430 hydrocarbons Chemical class 0.000 claims abstract description 11
- 238000004891 communication Methods 0.000 claims abstract description 5
- 230000003213 activating effect Effects 0.000 claims description 11
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 238000012856 packing Methods 0.000 claims description 3
- 238000003825 pressing Methods 0.000 claims description 2
- 238000010008 shearing Methods 0.000 claims description 2
- 230000007246 mechanism Effects 0.000 description 3
- 241000282472 Canis lupus familiaris Species 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 210000002445 nipple Anatomy 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
Images
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/06—Valve arrangements for boreholes or wells in wells
- E21B34/14—Valve arrangements for boreholes or wells in wells operated by movement of tools, e.g. sleeve valves operated by pistons or wire line tools
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/06—Valve arrangements for boreholes or wells in wells
- E21B34/10—Valve arrangements for boreholes or wells in wells operated by control fluid supplied from outside the borehole
- E21B34/102—Valve arrangements for boreholes or wells in wells operated by control fluid supplied from outside the borehole with means for locking the closing element in open or closed position
- E21B34/103—Valve arrangements for boreholes or wells in wells operated by control fluid supplied from outside the borehole with means for locking the closing element in open or closed position with a shear pin
Definitions
- This disclosure relates to an apparatus for shifting a valve. More specifically, but without limiting the scope of the disclosure, this disclosure relates to an apparatus and method for shifting a downhole valve from a first position to a second position, wherein the downhole valve is disposed within a well.
- a downhole valve such as a sliding sleeve.
- the sliding sleeve valve generally has a sleeve member that is slidable from a first position to a second position, which generally corresponds to a closed position to an open position.
- Sliding sleeve valves are commercially available from Weatherford, Inc. under the name RIV.
- prior art sliding sleeves use mechanical means to shift from the first position to the second position or from the second position to the first position.
- the shifting tools can be run into the well using a secondary work string such as wire line, tubing, and coiled tubing.
- the shifting tools provide a shifting force to manipulate a sleeve or mandrel in an assembly, such as an oil well completion tool.
- the use of the secondary work string poses many problems. For instance, the use of the secondary work string is expensive and time consuming. Also, the introduction of the secondary work string into the well may cause problems such as the secondary work string becoming stuck within the well.
- a device for shifting a sliding sleeve from a first position to a second position is disclosed.
- the sliding sleeve is concentrically positioned within a well, and wherein the sliding sleeve contains a moveable inner member and wherein the well is in communication with a hydrocarbon reservoir.
- the device comprises an outer housing forming an annulus with the well and a power piston slidably disposed within the outer housing.
- the power piston comprises an upper shoulder configured to form an annular chamber and a tubular chamber relative to the outer housing, and a lower shoulder c configured to form an atmospheric chamber relative to the outer housing.
- the device further comprises an up latch means for preventing upward movement of the power piston relative to the outer housing, a down latch means for preventing downward movement of the power piston relative to the outer housing, and wherein movement of the power piston shifts the moveable inner member from the first position to the second position.
- the down latch means comprises a shear ring insert, a first plurality of shear pins connecting the shear ring insert to the power piston, and a c-ring configured to prevent downward movement of the power piston after the first shear pins have sheared.
- the up latch means may comprise a collet sleeve abutting the power piston, and wherein the collet sleeve includes a collet member engaging the outer housing, and an inner support member disposed within the collet member.
- the device may further contain a second plurality of shear pins for attaching the collet sleeve to the outer housing.
- the device includes an annular passage communicating the annulus to the annular chamber, and an inner bore passage communicating the inner bore to the tubular chamber.
- the valve is connected to a production screen, and wherein the production screen is placed adjacent a hydrocarbon reservoir in the well.
- the outer housing is connected to a coiled tubing string, and wherein the coiled tubing string is placed concentrically within the well.
- the method comprises providing an activating device operatively attached to the sliding sleeve valve, the activating device including: an outer housing forming an annulus with the well; a power piston disposed within the outer housing, and wherein the power piston includes an upper shoulder configured to form an annular chamber and a tubular chamber, and a lower shoulder configured to form an atmospheric chamber.
- the activating device further includes a collet member engaging the outer housing, an inner support member disposed within the collet member, a shear ring insert, and shear pins connecting the shear ring insert to the upper piston.
- the downhole valve contains a moveable inner member and wherein movement of the power piston shifts the moveable inner member from the first position to the second position.
- the method further includes lowering the sliding sleeve valve and attached activating device into the well on a work string.
- the power piston is prevented from moving upward via the collet member, and additionally, the power piston is prevented from moving downward via a snap engaging the power piston.
- the method further includes performing a well intervention technique on the well.
- the collet member is shifted upward.
- the method further comprises pressuring the tubular chamber of the activating device, shearing the shear pins that connected the shear ring insert to the power piston, and moving the power piston upward into engagement with the collet member.
- the method further includes disengaging the snap ring from the power piston so that the snap ring is allowed to slide along the power piston, capturing the snap ring within a groove on the power piston and releasing the applied pressure to the tubular chamber of the activating device.
- the annular chamber is expanded relative to the atmospheric chamber thereby allowing the power piston to move downward, and the sliding sleeve valve is moved from the first position to the second position.
- the step of pressuring the internal bore includes applying pressure to an internal passage and into the tubular chamber and the step of expanding the annular chamber includes allowing an annulus pressure into an annular passage and into the annular chamber.
- the step of moving the sliding sleeve valve from the first position to the second position includes abutting an end of the power piston against an end of the moveable inner member so that the power piston shifts the sliding sleeve valve from the first position to the second position.
- the sliding sleeve valve is run into the well on a coiled tubing string.
- the step of performing the well intervention technique includes gravel packing the well.
- An advantage of the present apparatus is that it insures full movement of the sliding sleeve to the open position. Another advantage is that most hydrocarbon well completion equipment that relies on hydraulic mechanisms has a hydraulic operator which cannot be separated from the main tool; the present apparatus is designed to be a separate component from the sliding sleeve valve.
- the present shifting apparatus is designed to replace wireline, tubing, and/or coiled tubing conveyed shifting tools that provide shifting force to manipulate a sleeve or mandrel in a hydrocarbon well completion tool.
- the present apparatus eliminates the need for a wireline, concentric string, or coil tubing operation to deliver the shifting force to the sliding sleeve.
- a feature of the present invention includes the three ( 3 ) chambers that are configured to assist in delivering the force necessary to move the sleeve from a first position to a second position.
- the three chambers include the atmospheric, annular, and tubular chambers.
- Another feature includes a power piston that is operatively associated with the atomospheric, annular and tubular chamber.
- the latching mechanisms that selectively latch the power piston in place.
- the latching mechanisms include use of a collet member, a shear ring insert and a snap ring member.
- FIGS. 1A-1D are a partial cross-sectional view of the most preferred embodiment of the shifting apparatus of the present invention operatively attached to a sliding sleeve in the run in position.
- FIG. 2 is a sequential view of the shifting apparatus and sliding sleeve seen in FIGS. 1A-1D with the collet sleeve shifted upward.
- FIGS. 3A-3C are a sequential view of the shifting apparatus and sliding sleeve seen in FIGS. 1A-1C while internal tubing pressure is being applied.
- FIGS. 4A-4D are a sequential view of the shifting apparatus and sliding sleeve seen in FIGS. 3A-3C after relieving the internal tubing pressure.
- FIGS. 5A-5D are a sequential view of the shifting apparatus and sliding sleeve seen in FIGS. 4A-4D with sliding sleeve having been shifted.
- FIG. 6 is a schematic illustration of the apparatus suspended within a well from a platform.
- FIG. 7 is an expanded view of the area marked “7” in FIG. 1 .
- FIG. 8 is an expanded view of the area marked “8” in FIG. 1 .
- FIGS. 1A-1D a partial cross-sectional view of the most preferred embodiment of the shifting apparatus 2 of the present invention operatively attached to a sliding sleeve valve 4 in the run in position.
- the shifting apparatus 2 includes the cylindrical top sub 6 with an internal nipple profile 8 .
- the top sub 6 extends to the cylindrical upper housing 10 which in turn extends to the cylindrical upper intermediate housing 12 , and wherein the intermediate housing 12 is connected to the cylindrical lower intermediate housing 14 , which in turn is connected to the cylindrical lower housing 16 .
- the lower housing 16 is connected to the cylindrical adapter 18 , and wherein the adapter is connected to the sliding sleeve 4 .
- the various housings, in the preferred embodiment will be connected via thread means, well known in the art.
- the sliding sleeve valve 4 has an outer member 20 having ports 22 and a moveable inner member 24 containing slots 26 , and wherein in a first position the slots 26 are isolated from the ports 22 and therefore there is no communication from the inner bore portion to the outer portion of the valve 4 , and in a second position, the slots 26 are essentially aligned with the ports 22 which allows communication from the inner bore portion to the outer portion of the valve 4 .
- Sliding sleeve valves are commercially available from Weatherford, Inc. under the name RIV.
- a sliding sleeve valve was disclosed in patent application Ser. No. 10/875,411, filed on 24 Jun. 2004, entitled “Valve Apparatus with Seal Assembly”, which is incorporated herein by express reference.
- the shifting apparatus 2 has an internal bore, seen generally at 28 , and slidably disposed within the bore 28 is the power piston 30 .
- the power piston 30 has a first end 32 (seen generally in FIG. 1A ) and a second end 34 (seen generally in FIG. 1C ).
- At the first end 32 is the upper push piston nut 36 that will be threadedly connected to the first end 32 .
- a shear ring insert 38 is fitted between the shoulder 40 on the housing 10 and the radial end 42 on the housing 12 , and wherein the shear ring insert 38 has shear pins, seen generally at 44 , disposed therethrough connecting the upper push piston nut 36 to the shear ring insert 38 .
- the snap ring 46 is shown engaging upper push piston nut 36 which prevents the power piston 30 from a downward movement.
- a groove 48 is disposed on the power piston 30 , wherein the snap ring 46 will cooperate and engage with the groove 48 as will be described later.
- FIG. 1 A further depicts the collet sleeve, seen generally at 50 , for preventing upward movement of the power piston 30 .
- the collet sleeve 50 comprises a collet member 52 that is partially disposed within an inner support member 54 , and wherein the collet member 52 is attached to the inner support member 54 via shear pin 56 .
- the collet member 52 has the protuberance 58 that engages the internal groove 60 of the top sub 6 .
- the collet member 52 has an inner shoulder 62 that is designed to engage a running tool that will shift the collet member 52 upward, as will be more fully discussed later in the disclosure.
- FIG. 1A shows the collet sleeve 50 having a plurality of dogs 64 that engage the internal groove 66 located on the inner part of the upper housing 10 . Note that in FIG. 1A , the end 68 of the upper push piston nut 36 abuts the end 70 of the inner support member 54 , and therefore, the power piston 30 can not move up.
- the lower intermediate housing 14 has the radial shoulder 74 that cooperates with the radial shoulder 76 on the expanded section 77 of the power piston 30 to form the annular chamber 78 .
- a port 80 formed in the lower intermediate housing 14 communicates the outer portion of the shifting apparatus 2 to the annular chamber 78 .
- the seal means 82 formed on the inner portion of the lower intermediate housing 14 and the seal means 84 formed on the expanded section 77 of the power piston 30 cooperate to seal the annular chamber 78 , as well understood by those of ordinary skill in the art.
- FIG. 1B depicts the expanded section 77 extends to the radial shoulder 86 , and wherein the radial end 88 of the lower housing 16 and the radial shoulder 86 cooperate to form the tubular chamber 90 .
- a pressure applied to the internal bore 28 will be communicated through the inner bore port 92 and into the tubular chamber 90 .
- the seal means 94 on the outer portion of the power piston 30 and the seal means 84 will cooperate to seal the tubular chamber 90 .
- the power piston 30 has configured thereon the lower push piston 96 which is another expanded section of the power piston 30 , and wherein the lower push piston 96 contains the end shoulder 98 .
- FIG. 1C depicts the seal means 102 that are disposed on an expanded portion of the inner portion of the lower housing 16 .
- the seal means 102 and the seal means 94 act together with the lower housing 16 and power piston 30 , and cooperate to form an atmospheric chamber 104 .
- the pressure within the chamber 104 is sealed at the surface, and therefore, will remain at atmospheric pressure when disposed within the well.
- the sleeve inner member 24 has the first end 106 and the second end 108 .
- the second end 34 of the power piston 30 is configured for a gap with the first end 106 in order to move the sleeve inner member 24 from a first position to a second position, as will be more fully set out later in the description.
- FIGS. 1A-1D represent the apparatus 2 in the run-in position.
- the FIGS. 1A-1D represent the apparatus 2 as it is run into the well on a work string.
- the well intervention work may include such procedures as gravel packing, acidizing, fracturing, etc.
- FIG. 2 a sequential view of the shifting apparatus 2 (which is attached to the sliding sleeve valve 4 seen in FIGS. 1A-1D ) will now be described with the collet member 52 shifted upward.
- the operator may utilized the work string, and in particular a pulling tool (not shown) to engage the inner shoulder 62 in order to shift the collet member 52 upward.
- FIGS. 3A-3C a sequential view of the shifting apparatus 2 and sliding sleeve 4 seen in FIGS. 1C and 1D while internal tubing pressure is being applied will now be described. More specifically, the operator has pulled the pulling tool out of the well, and an internal pressure is applied to the internal bore 28 of the apparatus 2 . The application of internal pressure is directed into port 92 and then into the tubular chamber 90 , which in turn expands the tubular chamber 90 . The shear screws 44 in the shear ring insert 38 will shear into parts 45 a, 45 b due to the applied force on the power piston 30 .
- the inner support member 54 and the upper push piston nut 36 shift upwards, and wherein the c-ring 46 will ride down on the power piston 30 and ultimately, after a predetermined amount of travel, the c-ring 46 will snap into groove 48 . Once the c-ring 46 snaps into the groove 48 , the power piston 30 will be allowed to move downward since the c-ring 46 is no longer engaging the power piston 30 .
- FIGS. 4A-4D a sequential view of the shifting apparatus 2 and sliding sleeve 4 seen in FIGS. 3A-3D after relieving the internal tubing pressure will now be described.
- the annulus pressure will enter into the annular chamber 78 via the annular port 80 .
- the annular pressure within the annular chamber 78 will expand the chamber 78 so that the power piston 30 shifts downward into contact with the sleeve inner member 24 , i.e. end 34 contacts and moves end 106 .
- FIGS. 5A-5D a sequential view of the shifting apparatus 2 and sliding sleeve 4 seen in FIGS. 4A-4D with sliding sleeve inner member 24 having been shifted. Hence, the ports 22 and the slots 26 are now aligned, and the valve is in the open position.
- FIG. 6 is a schematic illustration of the shifting apparatus 2 suspended within a well 120 from a drilling rig 122 .
- the shifting apparatus 2 is operatively attached to the sliding sleeve valve 4 as previously described.
- the shifting apparatus 2 is also operatively attached at the other end to a work string 124 , and wherein the work string 124 may be a drill string, tubular, or coiled tubing string.
- the outer portion of the work string 124 and the inner portion of the well form an annulus 126 .
- FIG. 1 is a schematic illustration of the shifting apparatus 2 suspended within a well 120 from a drilling rig 122 .
- the shifting apparatus 2 is operatively attached to the sliding sleeve valve 4 as previously described.
- the shifting apparatus 2 is also operatively attached at the other end to a work string 124 , and wherein the work string 124 may be a drill string, tubular, or coiled tubing string.
- FIG. 6 also depicts a packer means 128 that has been set in the well 120 , and wherein the packer means 128 is operatively attached to the work string 124 , and wherein the packer means 128 generally sealingly engages the inner portion of the well 120 . . .
- the well 120 has perforations 130 in the well 120 communicating an inner portion of the well 120 with a hydrocarbon reservoir 132 .
- the sliding sleeve valve 4 will be moved from a first position to a second position.
Abstract
Description
- This disclosure relates to an apparatus for shifting a valve. More specifically, but without limiting the scope of the disclosure, this disclosure relates to an apparatus and method for shifting a downhole valve from a first position to a second position, wherein the downhole valve is disposed within a well.
- In the course of completing and producing hydrocarbon wells, operators find it necessary to install various components such as packers, gravel pack screens, liners, etc. As those of ordinary skill will readily recognize, one component used is a downhole valve, such as a sliding sleeve. The sliding sleeve valve generally has a sleeve member that is slidable from a first position to a second position, which generally corresponds to a closed position to an open position. Sliding sleeve valves are commercially available from Weatherford, Inc. under the name RIV.
- Generally, prior art sliding sleeves use mechanical means to shift from the first position to the second position or from the second position to the first position. The shifting tools can be run into the well using a secondary work string such as wire line, tubing, and coiled tubing. The shifting tools provide a shifting force to manipulate a sleeve or mandrel in an assembly, such as an oil well completion tool. However, the use of the secondary work string poses many problems. For instance, the use of the secondary work string is expensive and time consuming. Also, the introduction of the secondary work string into the well may cause problems such as the secondary work string becoming stuck within the well.
- Therefore, there is a need for an apparatus and method that will allow for an efficient shifting of a downhole valve. There is a also a need for an apparatus and method that dependably shifts a downhole valve without the need for a secondary string. Further, there is a need for a shifting device that is a separate component from the downhole valve. These needs, and many other needs, will be met by the apparatus and method herein disclosed.
- A device for shifting a sliding sleeve from a first position to a second position is disclosed. The sliding sleeve is concentrically positioned within a well, and wherein the sliding sleeve contains a moveable inner member and wherein the well is in communication with a hydrocarbon reservoir. The device comprises an outer housing forming an annulus with the well and a power piston slidably disposed within the outer housing. The power piston comprises an upper shoulder configured to form an annular chamber and a tubular chamber relative to the outer housing, and a lower shoulder c configured to form an atmospheric chamber relative to the outer housing.
- The device further comprises an up latch means for preventing upward movement of the power piston relative to the outer housing, a down latch means for preventing downward movement of the power piston relative to the outer housing, and wherein movement of the power piston shifts the moveable inner member from the first position to the second position. In one preferred embodiment, the down latch means comprises a shear ring insert, a first plurality of shear pins connecting the shear ring insert to the power piston, and a c-ring configured to prevent downward movement of the power piston after the first shear pins have sheared. Also, the up latch means may comprise a collet sleeve abutting the power piston, and wherein the collet sleeve includes a collet member engaging the outer housing, and an inner support member disposed within the collet member. The device may further contain a second plurality of shear pins for attaching the collet sleeve to the outer housing.
- In the most preferred embodiment, the device includes an annular passage communicating the annulus to the annular chamber, and an inner bore passage communicating the inner bore to the tubular chamber. In one preferred embodiment, the valve is connected to a production screen, and wherein the production screen is placed adjacent a hydrocarbon reservoir in the well. Also, in one preferred embodiment, the outer housing is connected to a coiled tubing string, and wherein the coiled tubing string is placed concentrically within the well.
- Also disclosed is a method of shifting a sliding sleeve valve from a first position to a second position, and wherein the sliding sleeve is positioned within a well. The method comprises providing an activating device operatively attached to the sliding sleeve valve, the activating device including: an outer housing forming an annulus with the well; a power piston disposed within the outer housing, and wherein the power piston includes an upper shoulder configured to form an annular chamber and a tubular chamber, and a lower shoulder configured to form an atmospheric chamber. The activating device further includes a collet member engaging the outer housing, an inner support member disposed within the collet member, a shear ring insert, and shear pins connecting the shear ring insert to the upper piston. In the preferred embodiment, the downhole valve contains a moveable inner member and wherein movement of the power piston shifts the moveable inner member from the first position to the second position.
- The method further includes lowering the sliding sleeve valve and attached activating device into the well on a work string. The power piston is prevented from moving upward via the collet member, and additionally, the power piston is prevented from moving downward via a snap engaging the power piston. The method further includes performing a well intervention technique on the well.
- The collet member is shifted upward. The method further comprises pressuring the tubular chamber of the activating device, shearing the shear pins that connected the shear ring insert to the power piston, and moving the power piston upward into engagement with the collet member. The method further includes disengaging the snap ring from the power piston so that the snap ring is allowed to slide along the power piston, capturing the snap ring within a groove on the power piston and releasing the applied pressure to the tubular chamber of the activating device. Next, the annular chamber is expanded relative to the atmospheric chamber thereby allowing the power piston to move downward, and the sliding sleeve valve is moved from the first position to the second position.
- In the most preferred embodiment, the step of pressuring the internal bore includes applying pressure to an internal passage and into the tubular chamber and the step of expanding the annular chamber includes allowing an annulus pressure into an annular passage and into the annular chamber. Also, the step of moving the sliding sleeve valve from the first position to the second position includes abutting an end of the power piston against an end of the moveable inner member so that the power piston shifts the sliding sleeve valve from the first position to the second position. In one preferred embodiment, the sliding sleeve valve is run into the well on a coiled tubing string. Additionally, the step of performing the well intervention technique includes gravel packing the well.
- An advantage of the present apparatus is that it insures full movement of the sliding sleeve to the open position. Another advantage is that most hydrocarbon well completion equipment that relies on hydraulic mechanisms has a hydraulic operator which cannot be separated from the main tool; the present apparatus is designed to be a separate component from the sliding sleeve valve.
- Yet another advantage is that the present shifting apparatus is designed to replace wireline, tubing, and/or coiled tubing conveyed shifting tools that provide shifting force to manipulate a sleeve or mandrel in a hydrocarbon well completion tool. The present apparatus eliminates the need for a wireline, concentric string, or coil tubing operation to deliver the shifting force to the sliding sleeve.
- A feature of the present invention includes the three (3) chambers that are configured to assist in delivering the force necessary to move the sleeve from a first position to a second position. The three chambers include the atmospheric, annular, and tubular chambers. Another feature includes a power piston that is operatively associated with the atomospheric, annular and tubular chamber. Yet another feature are the latching mechanisms that selectively latch the power piston in place. The latching mechanisms include use of a collet member, a shear ring insert and a snap ring member.
-
FIGS. 1A-1D are a partial cross-sectional view of the most preferred embodiment of the shifting apparatus of the present invention operatively attached to a sliding sleeve in the run in position. -
FIG. 2 is a sequential view of the shifting apparatus and sliding sleeve seen inFIGS. 1A-1D with the collet sleeve shifted upward. -
FIGS. 3A-3C are a sequential view of the shifting apparatus and sliding sleeve seen inFIGS. 1A-1C while internal tubing pressure is being applied. -
FIGS. 4A-4D are a sequential view of the shifting apparatus and sliding sleeve seen inFIGS. 3A-3C after relieving the internal tubing pressure. -
FIGS. 5A-5D are a sequential view of the shifting apparatus and sliding sleeve seen inFIGS. 4A-4D with sliding sleeve having been shifted. -
FIG. 6 is a schematic illustration of the apparatus suspended within a well from a platform. -
FIG. 7 is an expanded view of the area marked “7” inFIG. 1 . -
FIG. 8 is an expanded view of the area marked “8” inFIG. 1 . - Referring collectively now to
FIGS. 1A-1D , a partial cross-sectional view of the most preferred embodiment of the shiftingapparatus 2 of the present invention operatively attached to a slidingsleeve valve 4 in the run in position. The shiftingapparatus 2 includes the cylindricaltop sub 6 with aninternal nipple profile 8. Thetop sub 6 extends to the cylindricalupper housing 10 which in turn extends to the cylindrical upperintermediate housing 12, and wherein theintermediate housing 12 is connected to the cylindrical lowerintermediate housing 14, which in turn is connected to the cylindricallower housing 16. Thelower housing 16 is connected to thecylindrical adapter 18, and wherein the adapter is connected to the slidingsleeve 4. It should be noted that the various housings, in the preferred embodiment, will be connected via thread means, well known in the art. - The sliding
sleeve valve 4 has anouter member 20 havingports 22 and a moveableinner member 24 containingslots 26, and wherein in a first position theslots 26 are isolated from theports 22 and therefore there is no communication from the inner bore portion to the outer portion of thevalve 4, and in a second position, theslots 26 are essentially aligned with theports 22 which allows communication from the inner bore portion to the outer portion of thevalve 4. Sliding sleeve valves are commercially available from Weatherford, Inc. under the name RIV. A sliding sleeve valve was disclosed in patent application Ser. No. 10/875,411, filed on 24 Jun. 2004, entitled “Valve Apparatus with Seal Assembly”, which is incorporated herein by express reference. - The shifting
apparatus 2 has an internal bore, seen generally at 28, and slidably disposed within thebore 28 is thepower piston 30. Thepower piston 30 has a first end 32 (seen generally inFIG. 1A ) and a second end 34 (seen generally inFIG. 1C ). At thefirst end 32 is the upperpush piston nut 36 that will be threadedly connected to thefirst end 32. Ashear ring insert 38 is fitted between theshoulder 40 on thehousing 10 and theradial end 42 on thehousing 12, and wherein theshear ring insert 38 has shear pins, seen generally at 44, disposed therethrough connecting the upperpush piston nut 36 to theshear ring insert 38. Thesnap ring 46 is shown engaging upperpush piston nut 36 which prevents thepower piston 30 from a downward movement. Agroove 48 is disposed on thepower piston 30, wherein thesnap ring 46 will cooperate and engage with thegroove 48 as will be described later. -
FIG. 1 A further depicts the collet sleeve, seen generally at 50, for preventing upward movement of thepower piston 30. Referring now toFIG. 8 , which is an expanded view of the area “8” inFIG. 1A , thecollet sleeve 50 comprises acollet member 52 that is partially disposed within aninner support member 54, and wherein thecollet member 52 is attached to theinner support member 54 viashear pin 56. Thecollet member 52 has theprotuberance 58 that engages theinternal groove 60 of thetop sub 6. Returning toFIG. 1A , thecollet member 52 has aninner shoulder 62 that is designed to engage a running tool that will shift thecollet member 52 upward, as will be more fully discussed later in the disclosure. Additionally,FIG. 1A shows thecollet sleeve 50 having a plurality ofdogs 64 that engage theinternal groove 66 located on the inner part of theupper housing 10. Note that inFIG. 1A , theend 68 of the upperpush piston nut 36 abuts theend 70 of theinner support member 54, and therefore, thepower piston 30 can not move up. - Referring specifically to
FIG. 1B , the lowerintermediate housing 14 has theradial shoulder 74 that cooperates with theradial shoulder 76 on the expandedsection 77 of thepower piston 30 to form theannular chamber 78. Aport 80 formed in the lowerintermediate housing 14 communicates the outer portion of the shiftingapparatus 2 to theannular chamber 78. It should be noted that the seal means 82 formed on the inner portion of the lowerintermediate housing 14 and the seal means 84 formed on the expandedsection 77 of thepower piston 30 cooperate to seal theannular chamber 78, as well understood by those of ordinary skill in the art. -
FIG. 1B depicts the expandedsection 77 extends to theradial shoulder 86, and wherein theradial end 88 of thelower housing 16 and theradial shoulder 86 cooperate to form thetubular chamber 90. Hence, a pressure applied to theinternal bore 28 will be communicated through theinner bore port 92 and into thetubular chamber 90. The seal means 94 on the outer portion of thepower piston 30 and the seal means 84 will cooperate to seal thetubular chamber 90. - The
power piston 30 has configured thereon thelower push piston 96 which is another expanded section of thepower piston 30, and wherein thelower push piston 96 contains theend shoulder 98.FIG. 1C depicts the seal means 102 that are disposed on an expanded portion of the inner portion of thelower housing 16. As per the teachings of the present disclosure, the seal means 102 and the seal means 94, act together with thelower housing 16 andpower piston 30, and cooperate to form anatmospheric chamber 104. The pressure within thechamber 104 is sealed at the surface, and therefore, will remain at atmospheric pressure when disposed within the well. - The sleeve
inner member 24 has thefirst end 106 and thesecond end 108. Thesecond end 34 of thepower piston 30 is configured for a gap with thefirst end 106 in order to move the sleeveinner member 24 from a first position to a second position, as will be more fully set out later in the description. -
FIGS. 1A-1D represent theapparatus 2 in the run-in position. In other words, theFIGS. 1A-1D represent theapparatus 2 as it is run into the well on a work string. Once theapparatus 2 reaches the desired depth, the planned well intervention work may proceed. The well intervention work may include such procedures as gravel packing, acidizing, fracturing, etc. Referring now toFIG. 2 , a sequential view of the shifting apparatus 2 (which is attached to the slidingsleeve valve 4 seen inFIGS. 1A-1D ) will now be described with thecollet member 52 shifted upward. Hence, the operator may utilized the work string, and in particular a pulling tool (not shown) to engage theinner shoulder 62 in order to shift thecollet member 52 upward. Pulling tools are commercially available from Petroquip Inc. under the name WSST-2. Theshear pin 56 has been sheared (56 a, 56 b), and therefore, thecollet member 52 is moved upward via the work string. It should be noted that like numbers appearing in the various figures refer to like components. - Referring now to
FIGS. 3A-3C , a sequential view of the shiftingapparatus 2 and slidingsleeve 4 seen inFIGS. 1C and 1D while internal tubing pressure is being applied will now be described. More specifically, the operator has pulled the pulling tool out of the well, and an internal pressure is applied to theinternal bore 28 of theapparatus 2. The application of internal pressure is directed intoport 92 and then into thetubular chamber 90, which in turn expands thetubular chamber 90. The shear screws 44 in theshear ring insert 38 will shear intoparts power piston 30. Theinner support member 54 and the upperpush piston nut 36 shift upwards, and wherein the c-ring 46 will ride down on thepower piston 30 and ultimately, after a predetermined amount of travel, the c-ring 46 will snap intogroove 48. Once the c-ring 46 snaps into thegroove 48, thepower piston 30 will be allowed to move downward since the c-ring 46 is no longer engaging thepower piston 30. - In
FIGS. 4A-4D , a sequential view of the shiftingapparatus 2 and slidingsleeve 4 seen inFIGS. 3A-3D after relieving the internal tubing pressure will now be described. By relieving the pressure within theinternal bore 28, the annulus pressure will enter into theannular chamber 78 via theannular port 80. The annular pressure within theannular chamber 78 will expand thechamber 78 so that thepower piston 30 shifts downward into contact with the sleeveinner member 24, i.e. end 34 contacts and movesend 106. - Referring now to
FIGS. 5A-5D , a sequential view of the shiftingapparatus 2 and slidingsleeve 4 seen inFIGS. 4A-4D with sliding sleeveinner member 24 having been shifted. Hence, theports 22 and theslots 26 are now aligned, and the valve is in the open position. -
FIG. 6 is a schematic illustration of the shiftingapparatus 2 suspended within a well 120 from adrilling rig 122. The shiftingapparatus 2 is operatively attached to the slidingsleeve valve 4 as previously described. The shiftingapparatus 2 is also operatively attached at the other end to awork string 124, and wherein thework string 124 may be a drill string, tubular, or coiled tubing string. The outer portion of thework string 124 and the inner portion of the well form anannulus 126.FIG. 6 also depicts a packer means 128 that has been set in the well 120, and wherein the packer means 128 is operatively attached to thework string 124, and wherein the packer means 128 generally sealingly engages the inner portion of the well 120 . . . In one preferred embodiment, the well 120 hasperforations 130 in the well 120 communicating an inner portion of the well 120 with ahydrocarbon reservoir 132. Thus, in accordance with the teachings of the present invention, the slidingsleeve valve 4 will be moved from a first position to a second position. - Changes and modifications in the specifically described embodiments can be carried out without departing from the scope of the invention which is intended to be limited only by the scope of the appended claims and any equivalents thereof.
Claims (23)
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US11/788,818 US7617875B2 (en) | 2007-04-20 | 2007-04-20 | Shifting apparatus and method |
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US11/788,818 US7617875B2 (en) | 2007-04-20 | 2007-04-20 | Shifting apparatus and method |
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US20080257558A1 true US20080257558A1 (en) | 2008-10-23 |
US7617875B2 US7617875B2 (en) | 2009-11-17 |
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US8701765B2 (en) * | 2010-03-31 | 2014-04-22 | Schlumberger Technology Corporation | Shunt isolation valve |
WO2017124978A1 (en) * | 2016-01-20 | 2017-07-27 | 中国石油化工股份有限公司 | Novel sliding sleeve |
US10030479B2 (en) * | 2014-12-29 | 2018-07-24 | Ncs Multistage Inc. | Tool for opening and closing sleeves within a wellbore |
US10689950B2 (en) | 2016-04-22 | 2020-06-23 | Ncs Multistage Inc. | Apparatus, systems and methods for controlling flow communication with a subterranean formation |
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US9133671B2 (en) | 2011-11-14 | 2015-09-15 | Baker Hughes Incorporated | Wireline supported bi-directional shifting tool with pumpdown feature |
US11774002B2 (en) | 2020-04-17 | 2023-10-03 | Schlumberger Technology Corporation | Hydraulic trigger with locked spring force |
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